By Steve Holland, Joseph Ax, Bianca Flowers and Jarrett Renshaw PALM BEACH, Florida (Reuters) -Donald Trump was elected U.S. president, capping a remarkable comeback four years after he was voted out of the White House and ushering in a new American leadership likely to test democratic institutions at home and relations abroad.

Sen. Sherrod Brown (D-OH) lost his seat to Bernie Moreno, while Republican Jim Justice won the seat occupied by Sen. Joe Manchin (I-W.Va.), who chose not to run. Sen. Jon Tester (D-MT) was trailing in Montana.